[syzbot] [bpf?] general protection fault in bpf_get_local_storage

From: syzbot
Date: Sun Apr 13 2025 - 23:54:36 EST

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Hello,

syzbot found the following issue on:

HEAD commit: 4d872d51bc9d Merge tag 'x86-urgent-2025-03-10' of git://gi..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=128e67a8580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f71f17a9b92472b2
dashboard link: https://syzkaller.appspot.com/bug?extid=e6e8f6618a2d4b35e4e0
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1385b074580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1785b074580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-4d872d51.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/0ca94bd3aed2/vmlinux-4d872d51.xz
kernel image: https://storage.googleapis.com/syzbot-assets/da3cc5389139/bzImage-4d872d51.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e6e8f6618a2d4b35e4e0@xxxxxxxxxxxxxxxxxxxxxxxxx

Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 5934 Comm: sshd Not tainted 6.14.0-rc6-syzkaller-00003-g4d872d51bc9d #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:____bpf_get_local_storage kernel/bpf/cgroup.c:1587 [inline]
RIP: 0010:bpf_get_local_storage+0x17b/0x260 kernel/bpf/cgroup.c:1569
Code: 48 8d 7b 10 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bb 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 10 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 a6 00 00 00 48 8b 1b e8 13 90 73 09 83 f8 07 89
RSP: 0018:ffffc900006c0120 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81e40b82
RDX: 0000000000000000 RSI: ffffffff81e40c38 RDI: ffff8880356f2ca0
RBP: ffffc900006c0140 R08: 0000000000000005 R09: 0000000000000015
R10: 0000000000000015 R11: 0000000000000005 R12: ffff88802ae052c0
R13: ffffc90000d36002 R14: 0000000000000000 R15: ffff88802ae052f0
FS: 00007fb06dfb0d00(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000001c40 CR3: 0000000025fd8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
bpf_prog_3647604f6c8667e9+0x2e/0x41
bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run include/linux/filter.h:708 [inline]
__bpf_prog_run_save_cb+0x11f/0x330 include/linux/filter.h:938
bpf_prog_run_array_cg kernel/bpf/cgroup.c:68 [inline]
__cgroup_bpf_run_filter_skb+0x470/0xe60 kernel/bpf/cgroup.c:1425
sk_filter_trim_cap+0x234/0xac0 net/core/filter.c:147
tcp_filter net/ipv4/tcp_ipv4.c:2144 [inline]
tcp_v4_rcv+0x28fd/0x4380 net/ipv4/tcp_ipv4.c:2332
ip_protocol_deliver_rcu+0xba/0x4c0 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x316/0x570 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:469 [inline]
ip_sublist_rcv_finish+0x2c1/0x620 net/ipv4/ip_input.c:578
ip_list_rcv_finish+0x559/0x720 net/ipv4/ip_input.c:627
ip_sublist_rcv net/ipv4/ip_input.c:635 [inline]
ip_list_rcv+0x339/0x450 net/ipv4/ip_input.c:669
__netif_receive_skb_list_ptype net/core/dev.c:5936 [inline]
__netif_receive_skb_list_core+0x755/0x950 net/core/dev.c:5983
__netif_receive_skb_list net/core/dev.c:6035 [inline]
netif_receive_skb_list_internal+0x753/0xdb0 net/core/dev.c:6126
gro_normal_list include/net/gro.h:518 [inline]
gro_normal_list include/net/gro.h:514 [inline]
napi_complete_done+0x218/0x940 net/core/dev.c:6493
e1000_clean+0xa28/0x2700 drivers/net/ethernet/intel/e1000/e1000_main.c:3815
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:7188
napi_poll net/core/dev.c:7257 [inline]
net_rx_action+0xa94/0x1010 net/core/dev.c:7379
handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
do_softirq kernel/softirq.c:462 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:449
</IRQ>
<TASK>
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:389
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]
__dev_queue_xmit+0x8b0/0x43e0 net/core/dev.c:4676
dev_queue_xmit include/linux/netdevice.h:3313 [inline]
neigh_hh_output include/net/neighbour.h:523 [inline]
neigh_output include/net/neighbour.h:537 [inline]
ip_finish_output2+0xc34/0x2180 net/ipv4/ip_output.c:236
__ip_finish_output net/ipv4/ip_output.c:314 [inline]
__ip_finish_output+0x49e/0x950 net/ipv4/ip_output.c:296
ip_finish_output+0x35/0x380 net/ipv4/ip_output.c:324
NF_HOOK_COND include/linux/netfilter.h:303 [inline]
ip_output+0x13b/0x2a0 net/ipv4/ip_output.c:434
dst_output include/net/dst.h:459 [inline]
ip_local_out net/ipv4/ip_output.c:130 [inline]
__ip_queue_xmit+0x1a8d/0x22d0 net/ipv4/ip_output.c:528
__tcp_transmit_skb+0x2b39/0x3ec0 net/ipv4/tcp_output.c:1471
tcp_transmit_skb net/ipv4/tcp_output.c:1489 [inline]
tcp_write_xmit+0x12b1/0x8560 net/ipv4/tcp_output.c:2832
__tcp_push_pending_frames+0xaf/0x390 net/ipv4/tcp_output.c:3015
tcp_push+0x221/0x6f0 net/ipv4/tcp.c:751
tcp_sendmsg_locked+0x290f/0x37c0 net/ipv4/tcp.c:1326
tcp_sendmsg+0x2e/0x50 net/ipv4/tcp.c:1358
inet_sendmsg+0xb9/0x140 net/ipv4/af_inet.c:851
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:733 [inline]
sock_write_iter+0x4ac/0x5b0 net/socket.c:1137
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5ae/0x1150 fs/read_write.c:679
ksys_write+0x207/0x250 fs/read_write.c:731
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb06db16bf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff72e409a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000034 RCX: 00007fb06db16bf2
RDX: 0000000000000034 RSI: 000055e211330970 RDI: 0000000000000004
RBP: 000055e211339400 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000055e1e6312aa4
R13: 000000000000002b R14: 000055e1e63133e8 R15: 00007fff72e40a18
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:____bpf_get_local_storage kernel/bpf/cgroup.c:1587 [inline]
RIP: 0010:bpf_get_local_storage+0x17b/0x260 kernel/bpf/cgroup.c:1569
Code: 48 8d 7b 10 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bb 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 10 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 a6 00 00 00 48 8b 1b e8 13 90 73 09 83 f8 07 89
RSP: 0018:ffffc900006c0120 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81e40b82
RDX: 0000000000000000 RSI: ffffffff81e40c38 RDI: ffff8880356f2ca0
RBP: ffffc900006c0140 R08: 0000000000000005 R09: 0000000000000015
R10: 0000000000000015 R11: 0000000000000005 R12: ffff88802ae052c0
R13: ffffc90000d36002 R14: 0000000000000000 R15: ffff88802ae052f0
FS: 00007fb06dfb0d00(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000001c40 CR3: 0000000025fd8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 8d 7b 10 lea 0x10(%rbx),%rdi
4: 48 89 fa mov %rdi,%rdx
7: 48 c1 ea 03 shr $0x3,%rdx
b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
f: 0f 85 bb 00 00 00 jne 0xd0
15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1c: fc ff df
1f: 48 8b 5b 10 mov 0x10(%rbx),%rbx
23: 48 89 da mov %rbx,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 a6 00 00 00 jne 0xda
34: 48 8b 1b mov (%rbx),%rbx
37: e8 13 90 73 09 call 0x973904f
3c: 83 f8 07 cmp $0x7,%eax
3f: 89 .byte 0x89

---
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Next message: Da Xue: "Re: [PATCH] spi: meson-spicc: add DMA support"
Previous message: Manikandan Karunakaran Pillai: "RE: [PATCH v3 5/6] PCI: cadence: Add callback functions for RP and EP controller"
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